Unemployment may be an underlying cause of the rising crime rate.

失业可能是犯罪率攀升的潜在原因。

《牛津词典》

Treating the underlying cause is key to reducing the pain.

治疗内在病因对缓解疼痛很重要。

youdao

Most often, it is the underlying cause of any failed project.

在很多情况下，这都是导致很多项目失败的根本原因。

youdao

But MRSA was cited as the underlying cause of death in only one-third - 321.

BBC: THE CLAIM

Which brings us to an underlying cause of these daymares and sinister thoughts -- sleep deprivation.

CNN: When motherhood becomes a nightmare

For those who are unfamiliar, the underlying cause of the current credit crisis was a housing bubble.

FORBES: The Truth About Barney Frank